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CPT EIT LWI

CPT EIT LWI. |1>. |3>. |2>. CPT. Population Trapping. Suppose. then. solving Schrodinger Equation. What if we’re sneaky and choose Such that c 1 (t)=0. Then we are trapped in the two lower states. CPT. Dark States. In fact. So. Is an eigenstate of the interaction Hamiltonian.

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CPT EIT LWI

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  1. CPT EIT LWI

  2. |1> |3> |2>

  3. CPT Population Trapping Suppose then solving Schrodinger Equation What if we’re sneaky and choose Such that c1(t)=0. Then we are trapped in the two lower states.

  4. CPT Dark States In fact So Is an eigenstate of the interaction Hamiltonian

  5. CPT Coherent Population Incoherent mixture density matrix at t=0 Dark State density matrix at t=0 Trapped in dark state Rabi Oscillations

  6. EIT |1> strong weak |3> |2>

  7. EIT Im[n] Re[n]-1

  8. EIT quant-ph/0204173

  9. LWI We can completely eliminate absorption, can we do better? The idea: Pump atoms into dark state, then emission from |1> can exceed absorption from ground states. |1> |3> |2>

  10. BIB Quantum Optics, Scully and Zubairy,Cambridge University press 1997 Resolving conundrums in lasing without inversion via exact solutions to simple models, Scully, Quantum Opt. 6 p 203, 1994 Slow, Ultraslow, stored, and Frozen Light, Matsko,et. al., Adv.Atm.Mol.Opt.Phys. 47, p191 2001 Electromagnetically Induced Transparency, Harris, Physics Today, July 1997, p36

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